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Snappier pops: the System 80B pop bumper board values

From System 80B on, Gottlieb changed C1 from .01 mfd to a 1 mfd 100 V non-polarized capacitor and R1 from 1.5k to 10k 1/4 W. Making the same changes on earlier boards gives quicker, stronger pop action.

Systems

Related tips

Source: Repairing & Upgrading Gottlieb System 80 Pinballs from 1980 to 1989, Part One, Clay Harrell (pinrepair.com)